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VNA Calibration method to get accurate phase measurement 20GHz/39GHz

Question asked by talanino on Mar 3, 2018
Latest reply on Mar 13, 2018 by Dr_joel

I have 2 devices operating at 20GHz and 39Ghz.  These 2 devices has 1 input and 4 outputs.  My automate bench set up has a SP4T Microwave Switch can operate up to 40Ghz.  The DUT has control bits to change the phase of each output individually, and I need to measure the phase different between output 1 to each port 2, 3, and 4.  Since my set up as a SP4T switches, what kind of calibration method should I use to make sure the phase can be measure properly